Nicolas Jungers, the next step is to fully commit bisect from kernel 3.13 to 4.4 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ?
Please note, finding adjacent kernel versions is not fully commit bisecting. Also, the kernel release names are irrelevant for the purposes of bisecting. It is most helpful that after the fix commit (not kernel version) has been identified, you then mark this report Status Confirmed. Thank you for your help. ** Tags added: needs-bisect -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1406810 Title: screen is garbled with 14.10 (was fine with 14.04) Status in xorg package in Ubuntu: Incomplete Bug description: On a iMac Alu 2010, when upgrading from 14.04 desktop to 14.10 desktop or installing 10.10 server (SSH package only) the screen shows thin horizontal lines moving on a black background. /etc/X11/xorg.conf is absent (using default config), /var/log/Xorg.0.log doesn't show any error beside the lack of the fglrx module. But I doubt it's relevant with the symptoms appearing on the server install. --- .tmp.unity.support.test.0: ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity DistUpgraded: Fresh install DistroCodename: trusty DistroRelease: Ubuntu 14.04 DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] RV770/M98L [Mobility Radeon HD 4850] [1002:944a] (prog-if 00 [VGA controller]) Subsystem: Apple Inc. Device [106b:00b5] InstallationDate: Installed on 2015-01-01 (440 days ago) InstallationMedia: Ubuntu-Server 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.3) MachineType: Apple Inc. iMac11,1 Package: xorg 1:7.7+1ubuntu8.1 PackageArchitecture: amd64 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-79-generic root=UUID=f19c8f84-1553-4a36-889a-acfb8a13da9a ro ProcVersionSignature: Ubuntu 3.13.0-79.123-generic 3.13.11-ckt33 Tags: trusty ubuntu compiz-0.9 Uname: Linux 3.13.0-79-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo video _MarkForUpload: True dmi.bios.date: 03/17/10 dmi.bios.vendor: Apple Inc. dmi.bios.version: IM111.88Z.0034.B02.1003171314 dmi.board.name: Mac-F2268DAE dmi.board.vendor: Apple Inc. dmi.chassis.type: 13 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-F2268DAE dmi.modalias: dmi:bvnAppleInc.:bvrIM111.88Z.0034.B02.1003171314:bd03/17/10:svnAppleInc.:pniMac11,1:pvr1.0:rvnAppleInc.:rnMac-F2268DAE:rvr:cvnAppleInc.:ct13:cvrMac-F2268DAE: dmi.product.name: iMac11,1 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. version.compiz: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1~ubuntu14.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.6 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.6 version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.6 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Wed Mar 16 19:43:11 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.15.1-0ubuntu2.7 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1406810/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
